Battery-jar mandrel



Jul 'zo 192s; 1,593,279

J. H. WAGENHORST BATTERY JAR MANDREL Original Filed 00+; 51,1921 4 Sheet s-Sheet 1 1921 4 Sheets-Sheet 2 J. H, .WAGENHORST BATTERY JAR MANDREL m I My 1 MW B lfir I u WU 4H m 1 v m m l "y 5 M z ll}, my

Original Filed Oct. 31.

Jul 20 ,192

M i V gggg 7 1,593,279 J- H. WAGENHORST BATTERY JAR MANDHEL July '20 1926.

Original Filed Oct. 51. 1921 4 Sheets-Sheet a J. H. WAG ENHORST BATTERY JAR MANDREL Original Filed Gift. 31 1921 Sheets-Sheet 4 til) Patented July 20, 1926.

UNITED STATES JAMES H. wnennnonsr, or JACKSON, MICHIGAN.

IBATTERYJAR MANDREL.

Application filed. October 31, 1921, Serial. No. 511,859. Renewed May 2-7, :1926.

This invention relates generally to battery jar making machines and more particularly to a novel construction of mandrel used in said machine. The object of the invention is .to provide a simple and :eflicient construction ofmandrel upon which can be formed a complete battery jar composed of a plurality of cells and embodying an outer case or wall and subdividing partitions. Another objectof the invention is to provide a mandrel of .this character in which the strips of rubber which form the partitions can be quickly and easily inserted preparatory to beinglsurrounded :by the side portions of the j11,i2l:11d'21110th61 object is to .provide a mandrel embodying these features which will also position the supporting feet or lugs which-are employed in the bottoms of the, cells. Another object of the invention is to p'rovidewa mandrel of the kind referred to from which thevulcanized battery jar can be quickly and easily removed.

lVith these various objects in view the in vention zcOnsistsin the novel features of construction "hereinafter fully described and pointed dut in the claims.

In the drawings forming a part of this specification Fig. 1 is ,a' perspective view of amandrel embodying onet'orm of my invention; Fig. 2 is an end view of the same illustrating-the mannerof separating the sections of the mandrel preparatory to inserting the rubber partitioning strips, the man drel being positioned upon a support having oppositely disposed inclined portions topermit the angular separation of the mandrel sections; Fig. 3 is an inverted bottom plan View of the mandrel; Fig. 4 is a section on the line 4.- l of Fig. 8; Fig. 5 is a section on the line 5-5of Fig. 2 and Fig.6 is a section on the line i66 of Fig.- 2; Fig. 7 is'an inverted perspective view showing a slightly modified'torm of hinge connection; Fig. 8 is a detail view of a slightly modified form of hinge; Fig. 9 is a sectional perspective illustrating the major portion of a complete battery jar formed upon the mandrel; 10 is a perspective view of a modified form ofbattery jar; F ig. 11 is .a detail sectional view illustrating the manner of connecting the. handle to the end of the jar; Fig. 12 is a view showing a slight modification in the connection of the handle and Fig. 13 is a plan view of another modified form of jar,

it being possible to shape all of the .aiforesaid jars upon the mandrel constituting the subject-matter of this application. H U v In the practical embodiment of my invention, I provide a mandrel composed of a central section A and .side.sections B, these mandrels beingcast hollow as shown fin Figs. 4, 5 and 6 and having a central'reinforcing web 0. Each-section is given the proper dimensional contour and is preferably enveloped bya thin coating of lead ,as shown at D. This .thin coatingoflead is' capable of receiving ,a high polish which in c onnection with the physical and, chemical properties of lead will prevent :the vulcanized rubher adhering thereto. The .mandrel sections being of cast metal will have abundant strength to resist all pressures placed theref on and thereby prevent the thinlead coverns a b s--i iur m7. is arted Ea battery section is formed with notches lor recesses E in the closed ends thereof to receive the lugs or toot-pieces E which are to {be vulcanized tothe bottom "E? of the battery jar E Each mandrel section is tormed witha base'F at the open .endithereozf and in addition thereto link members G are" formed upon the lowerends of the section A and link members H upon the lower ends pf the sections B, these'link inernberslbeing apen tured as shown atlato receive the pivotal bolt Kwhen the sections areplaced together in their progperv positions and" the eyes I brought into register. By this means the sections of .the mandrel are. .pivota-lly connected together, and the adjacent flanges at the sides of the central and endsections are of such dimensions that they will contact with or engage one another as .most clearly shown'in Figs. 1 and twhen the mandrel is set in position ready to receive the strip of rubber thereabout which shall constitute the sides and ends of the jar. The mandrels A, B and C are spaced aparta definite dis tance as indicatedat L for the purpose of receiving thepartitioning strips ,E therebe-v tween and in orderto facilitatethe insertion of these partitioning strips I pivotally connect the sections of the mandrel together as previously described. As a first step in the operation of forming the jar, I move the section or mandrel upon a support which has a fiat central portion A and opposit ly disposed inclined portions B; and when the section or mandrel is moved upon this portion of the support, the end sections B swing away from the central section A as most clearly shown in Fig. 2 providing an angular space L into which the partitioning strips E can be quickly and easily 1nserted, the edges of the strips resting upon the base flanges of the central member A. Then when the mandrel is moved to another portion A of the support, the sections B will be brought back to their true perpendicular positions such as shown in Figs. 1 and 1, inasmuch as all of the bases rest upon the continuous horizontal portion A of the support.

The lugs or, foot pieces E may be inserted either before or after the partitioning strips are set in place.

After the lugs and the partitioning strips have been set in place, then the bottom of the jar is placed upon the closed ends of the mandrel and which in the illustration are the upper ends thereof. The strip of rubber which is to form the sides and ends of the jar is then folded around the mandrel and the pressure applied thereto so as to initially unite the sides and ends of the ar with the bottom thereof and also with the partitioning strips and lugs. I

The mandrel with the jar thus formed thereon is then placed in a vulcanizer and the jar vulcanized; after which the mandrel with the vulcanized jar thereon is removed from the vulcanizer and the vulcanized jar stripped therefrom. This can be accomplished in various ways, either by applying hooks to the ends of the jar or push rods may be passed up between cut-out portions of the bases as shown at L in Fig. 8, the pivot bolts in this instance being made short instead of extending the full width of the mandrel as shown in Fig. 3. It will also be noted by reference to Fig. 8 that the link members Gr and H are formed with bosses G and H surrounding the openings I, which bosses can have their faces machined so as to provide an accurate fit between these parts. In this way, accuracy of position of the cast metal parts can be obtained.

After the battery jar has been formed upon the mandrel, vulcanized and stripped therefrom. the mandrel is ready for use again and the various operations are repeatedly carried on as previously described.

By means of a mandrel of this kind I am able to form a complete battery jar comprising a plurality of cells separated from each other by means of partitions, the ends of which are thoroughly united by vulcanization with the side walls of the battery jar. The interior of the battery jar will, of course, be determined by the shaping and size of the mandrel and the exterior will be determined by enveloping wings or plates of the battery jar making machine.

In Figs. 10 and 13 I have shown different exterior designs which can be formed, enveloping wings or plates being cut to produce such designs, such embossing being employed preferably for the purpose of re ducing weight.

In Figs. 10 and 11 I have illustrated a novel form of handle M having counterbored openings h so that when the handles M are pressed against the strip of rubber N which constitutes the end of the box a portion of the rubber will be forced through these counterbored openings and in vulcanization the handles will be quickly connected to the ends of the jar. t will also be notet that the ends of the jar are slightly elevated at the center as shown at N, thereby protecting the handles from contact with the eleetrolite, as in handling the jars the electrolite is liable to slop over and may come in contact with the metallic handles of the jar, but by elevating the end portions of the center this liability is considerably reduced. In Fig. 12 I have shown a handle which is connected to the elevated end portion N by means of screws 0. These screws can be inserted in the soft rubber before vulcanization and can be removed after vulcanization and then screwed back again to connect the handle to the end of the jar. This feature of my invention is disclosed and claimed in my pending application for battery jars and method of making the same, Serial No. 114,522, filed June 8, 1926. v

It will thus be seen that I provide a simple and efiicient construction of mandrel capable of carrying out all of the objects herein referred to.

Having thus described my invention, what I claim is:

1. A mandrel for making a multiple cell battery jar, comprising a plurality of sections, each having a base, said bases being connected to each other.

2. A mandrel for making a multiple cell battery jar, comprising a plurality of sections each having a base, said bases being pivotally connected to each other.

3. A mandrel for making a multiple cell battery jar comprising a plurality of sections each having a laterally extending base, said bases being pivotally connected to each other.

4. A mandrel for making a multiple cell battery jar, comprising a plurality of sections, said sections being capable of separation to receive the partition strips therebetween, and also capable of reverse movement to hold said strips therebetween while the mandrel as a whole is enveloped.

5. A mandrel for making a multiple cell battery jar comprising a plurality of sections pivotally connected and capable of separation to receive the partition strips therebetween and capable of reverse movement to progressively grip said strip, and bring said sections into alignment to be enveloped as a Whole.

6. A mandrel for making a multiple cell battery jar comprising a plurality of sections pivotally connected together and capable of angular separation to receive the partition strips therebetween, and capable of a reverse movement to grip said strips and align said sections to be enveloped.

7. A mandrel for making a multiple cell battery jar comprising a plurality of sec tions pivotally connected together and cap-a lllG of angular separation to receive the partition strips therebetween, and capable of a reverse movement to grip said strips and align said sections to be enveloped in combination With means for effecting said separation and alignment.

8. A mandrel for making a multiple cell battery jar comprising a plurality of sections pivotally connected together and of such construction as to maintain definite spaced relation to one another When in alignment and capable of being moved out of alignment to separate said sections to receive the partition strips therebetween.

9. The combination With a mandrel composed of a plurality of sections hinged together, of a support composed of two parts, one to hold said mandrel sections in alignment and the other to separate said sections, When said sections rest thereon.

In testimony whereof, I hereunto atfix my signature.

JAMES H WAGENHORST. 

